Park Service archaeologists describe the find as a "nearly complete English-style wine bottle." It was found at the Foundation Site on the national monument

"The glass was probably hand-blown, which can be determined by its bulging base," the archaeologists say. "Manufacturing techniques are the most secure way of dating glass artifacts, and this vessel dates between 1780 and 1850. The artifacts found at the site, which is on a ridge on the western part of Buck Island, indicate that it was most likely a residence; archeologists have recovered large quantities of pottery and glass bottles. The island passed between Danish and British hands in the 18th and 19th centuries. Small groups of people lived on the island throughout the 19th century, working as fisherman or raising goats."